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%d,\n

%d,\n是什么意思，小括號(hào)里打上“我今年18歲”不行嗎？小括號(hào)里面的內(nèi)容不是很明白


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2 回答

例如：

int age=18;?

printf("我今年%d歲\n",age);

其中%d的意思是輸出整形變量，\n的意思是輸出換行符

輸出函數(shù)格式一般為printf("[輸出變量格式][換行符、制表符]",[已聲明的變量])

%d：整形變量

%f：浮點(diǎn)型變量

%lf：雙精度型變量

%c：字符型變量（聲明字符型變量時(shí)用單引號(hào)）

%s：字符串型變量

……

換行符（鍵盤回車鍵）：\n

制表符（鍵盤TAB鍵）：\t

……

小括號(hào)中的內(nèi)容也可以是其他文字，所以printf("我今年18歲")也是合法的

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